Gotowe bibliografie tematyczne / Piezoelectric

Gotowa bibliografia na temat „Piezoelectric”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 7 września 2023

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Spis treści

Zobacz listy aktualnych artykułów, książek, rozpraw, streszczeń i innych źródeł naukowych na temat „Piezoelectric”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Artykuły w czasopismach na temat "Piezoelectric"

1

WAN, YONGPING, i LIANGLIANG FAN. "MODELING THE PIEZOELECTRIC d33 COEFFICIENT OF THE CELLULAR PIEZOELECTRET FILM BY FINITE ELEMENT METHOD". Modern Physics Letters B 25, nr 31 (21.11.2011): 2343–51. http://dx.doi.org/10.1142/s0217984911027558.

Pełny tekst źródła
Streszczenie:
The piezoelectric d33 coefficient of voided charged polypropylene film is much pronounced, which can be as large as that of PZT ceramics. The piezoelectric effect originates from the electric field of distributed charges that is coupled with elastic deformation of the host matrix. For modeling the piezoelectric effect of cellular piezoelectret, we present a finite element model for the electrostatic analysis and the solution of elastic deformation. Qualitative analysis of piezoelectric d33 coefficient is given with respect to various parameters including material constants, void geometry and charge density. Quantitative comparison shows that this finite element model can simulate the inflation experiments of cellular piezoelectret very well. This finite element model is believed to be conducive to the optimization design of cellular piezoelectret, where the analysis is generally encountered for the piezoelectret with complex microstructures.
Style APA, Harvard, Vancouver, ISO itp.
2

Zhang, He Bin, Zhong Hua Zhang, Ya Ding Jin, Hui Lun Jiang, Lin Jun Fan i Xue Cai Yu. "Experimental Study on Tertiary Piezoelectric Effect of X-Cut Quartz Crystal". Key Engineering Materials 620 (sierpień 2014): 134–39. http://dx.doi.org/10.4028/www.scientific.net/kem.620.134.

Pełny tekst źródła
Streszczenie:
This Paper has analyzed the relationship between the generation of multiple piezoelectric effects and boundary conditions of piezoelectrics and the experiments have studied tertiary piezoelectric effect of piezoelectric quartz which is applied extensively in engineering practice. We processed our experiment by piezoelectric quartz crystal unit made by two pieces of X-cut piezoelectric quartz, parallel connected it to a capacitor with the equivalent capacitance of about 1,000 times of that of piezoelectric quartz crystal unit and then got the result of pure primary piezoelectric effect excluding tertiary induced effect; then compared it with conventional primary piezoelectric effect and concluded that tertiary piezoelectric effect of piezoelectric quartz is about 1.7% of primary piezoelectric effect; thus quantified longitudinally tertiary piezoelectric effect of piezoelectric quartz crystal, concluded that piezoelectric coefficient of tertiary effect of X-cut piezoelectric quartz is about 0.04 pC/N by experiment and got relative uncertainty and standard uncertainty of the results by such experiment methods respectively as 9.49×10-3and 1.37×10-2. This study on tertiary piezoelectric effect has provided a new approach for improving precision and sensitivity of piezoelectric sensors.
Style APA, Harvard, Vancouver, ISO itp.
3

Zhang, Zhong Hua, Guang Ming Cheng, Jun Wu Kan, Ping Zeng i Jian Ming Wen. "The Influence of Multiple Piezoelectric Effects on Elastic Coefficient of Piezoelectric Ceramics". Advanced Materials Research 305 (lipiec 2011): 348–52. http://dx.doi.org/10.4028/www.scientific.net/amr.305.348.

Pełny tekst źródła
Streszczenie:
The development of new materials and the performance improvement of existing materials become an important subject from different aspects. In this paper, based on the theoretical research results of multiple piezoelectric effects, the influence of multiple piezoelectric effects on elastic coefficient of piezoelectric ceramics is studied. Theoretical analysis indicates that it is multiple piezoelectric effects that make piezoelectrics have two kinds of elastic and they result in the decrease of elastic compliance coefficients. Experimental validation is performed through PZT-5. Experimental results show that elastic compliance coefficient grows decreased by 0.912 times.
Style APA, Harvard, Vancouver, ISO itp.
4

Zengtao Yang i Jiashi Yang. "Connected Vibrating Piezoelectric Bimorph Beams as a Wide-band Piezoelectric Power Harvester". Journal of Intelligent Material Systems and Structures 20, nr 5 (28.11.2008): 569–74. http://dx.doi.org/10.1177/1045389x08100042.

Pełny tekst źródła
Streszczenie:
We analyze coupled flexural vibration of two elastically and electrically connected piezoelectric beams near resonance for converting mechanical vibration energy to electrical energy. Each beam is a so-called piezoelectric bimorph with two layers of piezoelectrics. The 1D equations for bending of piezoelectric beams are used for a theoretical analysis. An exact analytical solution to the beam equations is obtained. Numerical results based on the solution show that the two resonances of individual beams can be tuned as close as desired by design when they are connected to yield a wide-band electrical output. Therefore, the structure can be used as a wide-band piezoelectric power harvester.
Style APA, Harvard, Vancouver, ISO itp.
5

Park, D. S., M. Hadad, L. M. Riemer, R. Ignatans, D. Spirito, V. Esposito, V. Tileli i in. "Induced giant piezoelectricity in centrosymmetric oxides". Science 375, nr 6581 (11.02.2022): 653–57. http://dx.doi.org/10.1126/science.abm7497.

Pełny tekst źródła
Streszczenie:
Piezoelectrics are materials that linearly deform in response to an applied electric field. As a fundamental prerequisite, piezoelectric materials must have a noncentrosymmetric crystal structure. For more than a century, this has remained a major obstacle for finding piezoelectric materials. We circumvented this limitation by breaking the crystallographic symmetry and inducing large and sustainable piezoelectric effects in centrosymmetric materials by the electric field–induced rearrangement of oxygen vacancies. Our results show the generation of extraordinarily large piezoelectric responses [with piezoelectric strain coefficients ( d 33 ) of ~200,000 picometers per volt at millihertz frequencies] in cubic fluorite gadolinium-doped CeO 2− x films, which are two orders of magnitude larger than the responses observed in the presently best-known lead-based piezoelectric relaxor–ferroelectric oxide at kilohertz frequencies. These findings provide opportunities to design piezoelectric materials from environmentally friendly centrosymmetric ones.
Style APA, Harvard, Vancouver, ISO itp.
6

Uchino, Kenji. "Piezoelectric Devices in the Sustainable Society". Sustainability in Environment 4, nr 4 (11.09.2019): p181. http://dx.doi.org/10.22158/se.v4n4p181.

Pełny tekst źródła
Streszczenie:
Our 21st century faces to a “sustainable society”, which enhances (a) usage of non-toxic materials, (b) disposal technology for existing hazardous materials, (c) reduction of contamination gas, (d) environmental monitoring system, (e) new energy source creation, and (f) energy-efficient device development in the piezoelectric area. With reducing their size, the electromagnetic components reduce their efficiency drastically. Thus, piezoelectric transducers with much less losses are highly sought recently. Piezoelectric devices seem to be all-around contributors and a key component to the above mentioned five R&D areas. Some of the efforts include: (a) Since the most popular piezoelectric lead zirconate titante ceramics will be regulated in European and Asian societies due to their toxicity (Pb2+ ion), lead-free piezoelectrics have been developed. (b) Since hazardous organic substances can easily be dissolved by the ultrasonic irradiation in water, a new safe disposal technology using piezoelectric transducers has been developed. (c) We demonstrated an energy recovery system on a hybrid car from its engine’s mechanical vibration to the rechargeable battery. (d) Micro ultrasonic motors based on piezoelectrics demonstrated 1/20 reduction in the volume and a 20-time increase in efficiency of the conventional electromagnetic motors. This paper introduces leading piezoelectric materials, devices, and drive/control methods, relating with the above “sustainability” technologies, aiming at further research expansion in this area.
Style APA, Harvard, Vancouver, ISO itp.
7

CHEN, YU, YUMEI WEN i PING LI. "CHARACTERIZATIONS OF DISSIPATION FACTORS IN PIEZOELECTRIC CERAMIC DISCS UNDER STRESS AND TEMPERATURE". International Journal of Information Acquisition 01, nr 04 (grudzień 2004): 327–35. http://dx.doi.org/10.1142/s0219878904000306.

Pełny tekst źródła
Streszczenie:
Losses in piezoelectrics are considered in general consisting of three different parts: Dielectric, elastic and piezoelectric losses. A method to analyze losses in piezoelectrics uses three dissipation factors to represent the corresponding losses by introducing complex coefficients into Mason's equivalent electric circuit. We establish a model of a piezoelectric ceramic disc utilizing the method mentioned above, and then the relationships between the complex coefficients and the equivalent circuit parameters are obtained. Derived from the piezoelectric equations with complex coefficients, the dissipation factors are related to the equivalent circuit parameters. The experiments give the effects of the temperature and the stress applied on the piezoelectric ceramic disc separately. It is shown that three dissipation factors exhibit different responses to the stress and temperature. Based on the theory of lattice phase and the theory that losses are considered to consist of four portions: Domain wall motion; fundamental lattice portion; microstructure portion and conductivity portion, the phenomenology of losses variations with the temperature and stress is explained.
Style APA, Harvard, Vancouver, ISO itp.
8

Wang, Hui, Xiaolin Wang, Matthew Wadsworth, Mohammad Faisal Ahmed, Zhe Liu i Changchun Zeng. "Design, Fabrication, Structure Optimization and Pressure Sensing Demonstration of COC Piezoelectret Sensor and Sensor Array". Micromachines 13, nr 8 (26.07.2022): 1177. http://dx.doi.org/10.3390/mi13081177.

Pełny tekst źródła
Streszczenie:
This study reported on the design and fabrication of a pseudo-piezoelectric material (piezoelectret) from cyclic olefin copolymer (COC) based on a micropillar structure. The fabrication feasibility of such structure was explored and piezoelectret with the good piezoelectric activity (characterized by quasi-static piezoelectric coefficient d33) was demonstrated. Response surface method with a central composite design was employed to investigate the effects of the structure parameter on the piezoelectric coefficient d33. An optimal structure design was obtained and was validated by experiments. With the optimal design, d33 can reach an exceptional high value of ~9000 pC/N under low pressure. The charging process and the electrical and electromechanical characteristics were further investigated by experimentation and modeling. We further demonstrated the scalability of the fabrication process and demonstrated the application of these sensors in position specific pressure sensing (pressure mapping).
Style APA, Harvard, Vancouver, ISO itp.
9

DAMJANOVIC, DRAGAN, NAAMA KLEIN, JIN LI i VIKTOR POROKHONSKYY. "WHAT CAN BE EXPECTED FROM LEAD-FREE PIEZOELECTRIC MATERIALS?" Functional Materials Letters 03, nr 01 (marzec 2010): 5–13. http://dx.doi.org/10.1142/s1793604710000919.

Pełny tekst źródła
Streszczenie:
The reasons for the lower piezoelectric properties in the most studied lead-free piezoelectrics, modified (K, Na)NbO 3 and ( Bi 0.5 Na 0.5) TiO 3, are discussed. Contributions from domain wall motion and properties at the morphotropic phase boundary are considered and are compared to those in PZT. Lead-free, non-piezoelectric solutions to electromechanical coupling are discussed.
Style APA, Harvard, Vancouver, ISO itp.
10

Liu, Qing, Yichi Zhang, Jing Gao, Zhen Zhou, Hui Wang, Ke Wang, Xiaowen Zhang, Longtu Li i Jing-Feng Li. "High-performance lead-free piezoelectrics with local structural heterogeneity". Energy & Environmental Science 11, nr 12 (2018): 3531–39. http://dx.doi.org/10.1039/c8ee02758g.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
Więcej źródeł

Rozprawy doktorskie na temat "Piezoelectric"

1

Yang, Xiaomei, i 楊笑梅. "Computational models for piezoelectrics and piezoelectric laminates". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31246217.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
2

Flynn, Anita M. "Piezoelectric Ultrasonic Micromotors". Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/7086.

Pełny tekst źródła
Streszczenie:
This report describes development of micro-fabricated piezoelectric ultrasonic motors and bulk-ceramic piezoelectric ultrasonic motors. Ultrasonic motors offer the advantage of low speed, high torque operation without the need for gears. They can be made compact and lightweight and provide a holding torque in the absence of applied power, due to the traveling wave frictional coupling mechanism between the rotor and the stator. This report covers modeling, simulation, fabrication and testing of ultrasonic motors. Design of experiments methods were also utilized to find optimal motor parameters. A suite of 8 mm diameter x 3 mm tall motors were machined for these studies and maximum stall torques as large as 10^(- 3) Nm, maximum no-load speeds of 1710 rpm and peak power outputs of 27 mW were realized. Aditionally, this report describes the implementation of a microfabricated ultrasonic motor using thin-film lead zirconate titanate. In a joint project with the Pennsylvania State University Materials Research Laboratory and MIT Lincoln Laboratory, 2 mm and 5 mm diameter stator structures were fabricated on 1 micron thick silicon nitride membranes. Small glass lenses placed down on top spun at 100-300 rpm with 4 V excitation at 90 kHz. The large power densities and stall torques of these piezoelectric ultrasonic motors offer tremendous promis for integrated machines: complete intelligent, electro-mechanical autonomous systems mass-produced in a single fabrication process.
Style APA, Harvard, Vancouver, ISO itp.
3

Bruna, Magali. "Piezoelectric ceramic devices". Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615866.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
4

Leinvuo, J. "Flextensional piezoelectric motors". Thesis, Cranfield University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409514.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
5

Boestad, Albin, i Fabian Rudberg. "Piezoelectric Guitar Tuner". Thesis, KTH, Mekatronik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-296320.

Pełny tekst źródła
Streszczenie:
This bachelor thesis in Mechatronics account for the process of constructing an automatic guitar tuner by means of a piezo-electric sensor, a stepper motor and Arduinobased control. The E4 - string on an acoustic guitar was used as a proxy for tuning any other possible guitar string. The accuracy and tuning-speed of the construction was examined through physical experimentation. Accuracy was measured in terms of the average distance from a piezo calibrated frequency value. The tuning-speed was appraisedby counting the number of times a guitar string had to be plucked before the motor stopped within an acceptable tuning interval. The automatic guitar tuner were able to reliably get the E4 - string in tune by plucking it once within an interval of ±2 Hz and +3.8 cents and −5.1 cents from the theoretical value. The average error was −3.4 cents from the targeted value.
I följande kandidatexamensarbete kontrueras en automatisk gitarrstämmare med hjälp av en piezosensor, en stegmotor och en Arduino-mikrokontroller. E4-strängen på en akustisk gitarr användes som substitut för hur stämningsproceduren skulle kunna fungera för vilken annan gitarrsträng som helst. Noggrannheten samt stämningshastigheten undersöktes genom experiment. Genomsnittet av frekvensskillnaderna mellan de piezo-kalibrerade avläsningsvärdena och E4-strängens värden definierade måttet på noggrannhet. Hastigheten på strängstämningen beräknades i form av hur många gånger en sträng behövdes slås an innan strängen var inom ett godkänt intervall. Den automatiska gitarrstämmaren visade sig pålitiligt kunna stämma E4-strängen på ett försök inom ett noggrannhetsintervall på ±2Hz från det teoretiska värdet. Stämmaren kunde stämma inom +3.4 cents och−5.1 cents samt var var i genomsnitt −3.4 cents i från det teoretiska värdet.
Style APA, Harvard, Vancouver, ISO itp.
6

Barham, Oliver M. "Microfabricated Bulk Piezoelectric Transformers". Thesis, University of Maryland, College Park, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10615552.

Pełny tekst źródła
Streszczenie:

Piezoelectric voltage transformers (PTs) can be used to transform an input voltage into a different, required output voltage needed in electronic and electro- mechanical systems, among other varied uses. On the macro scale, they have been commercialized in electronics powering consumer laptop liquid crystal displays, and compete with an older, more prevalent technology, inductive electromagnetic volt- age transformers (EMTs). The present work investigates PTs on smaller size scales that are currently in the academic research sphere, with an eye towards applications including micro-robotics and other small-scale electronic and electromechanical sys- tems. PTs and EMTs are compared on the basis of power and energy density, with PTs trending towards higher values of power and energy density, comparatively, indicating their suitability for small-scale systems. Among PT topologies, bulk disc-type PTs, operating in their fundamental radial extension mode, and free-free beam PTs, operating in their fundamental length extensional mode, are good can- didates for microfabrication and are considered here. Analytical modeling based on the Extended Hamilton Method is used to predict device performance and integrate mechanical tethering as a boundary condition. This model differs from previous PT models in that the electric enthalpy is used to derive constituent equations of motion with Hamilton’s Method, and therefore this approach is also more generally applica- ble to other piezoelectric systems outside of the present work. Prototype devices are microfabricated using a two mask process consisting of traditional photolithography combined with micropowder blasting, and are tested with various output electri- cal loads. 4mm diameter tethered disc PTs on the order of .002cm

3 , two orders smaller than the bulk PT literature, had the followingperformance: a prototype with electrode area ratio (input area / output area) = 1 had peak gain of 2.3 (± 0.1), efficiency of 33 (± 0.1)% and output power density of 51.3 (± 4.0)W cm

-3 (for output power of80 (± 6)mW) at 1M? load, for an input voltage range of 3V-6V (± one standard deviation). The gain results are similar to those of several much larger bulk devices in the literature, but the efficiencies of the present devices are lower. Rectangular topology, free-free beam devices were also microfabricated across 3 or- ders of scale by volume, with the smallest device on the order of .00002cm

3 . These devices exhibited higher quality factorsand efficiencies, in some cases, compared to circular devices, but lower peak gain (by roughly 1/2 ). Limitations of the microfab- rication process are determined, and future work is proposed. Overall, the devices fabricated in the present work show promise for integration into small-scale engi- neered systems, but improvements can be made in efficiency, and potentially voltage gain, depending on the application

Style APA, Harvard, Vancouver, ISO itp.
7

Zhu, Zangyuan. "Lead-free piezoelectric ceramics". Thesis, University of Leeds, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.581971.

Pełny tekst źródła
Streszczenie:
Legislation arising from health and environmental concerns has intensified research into finding suitable alternatives to lead-based electroceramics. Lead zirconate titanate (PZT) has been developed over several decades to become the market-leading piezoelectric ceramic. Lead-free solid solutions based on sodium potassium niobate, Na0.5K0.5NbO3 (NKN), show promising dielectric and piezoelectric properties. 1-2 The related (l-x)( Na0.5K0.5NbO3)-xBiScO3 binary system (NKN-BS) has been reported to exhibit maximum d33 values of 200 pCIN at 2 mol% BS.3 Similarly, an optimal d33 value has been reported for the binary NKN-LT system at 5-6 mol% LiTa03.4 In this work, a series of compositions along the compositional join in the ternary NKN-LT-BS system, extending from 0. Na0.5K0.5NbO3 -0.02BiScO3 toward LiTa03 have been prepared and characterized. A 0.98[0.98NKN - 0.02(LiTaO3)] - 0.02[BiScO3] (NKN- 2L T -2BS) composition showed enhanced piezoelectric properties, relative to similar compositions, with d33 values of 215 pCIN. This can be attributed to a phase content of mixed orthorhombic (or monoclinic) and tetragonal phases at ambient temperatures. Variable temperature X-ray diffraction (XRD), and dielectric measurements as a function of temperature, indicated phase transitions (on heating) from an orthorhombic (or monoclinic) crystal system to tetragonal and then cubic crystal systems at ~25°C and ~370°C respectively. Different types of dielectric behaviour were observed on increasing the LT content. A NKN-5%LT-2%BS composition exhibited twin dielectric peaks at high temperatures (~370°C and ~470°C), along with broad X-ray diffraction peaks and a fine grain size, < 0.5 μm. The twin dielectric peaks suggest that chemical inhomogeneities may have been present; this was examined using transmission electron microscopy (TEM) with energy dispersive X-ray analysis (EDX). Elemental segregation was observed within individual grains, such that a core-shell grain structure was evident. The twin high temperature dielectric peaks are attributed to the separate response from the core and shell regions, each of which have a characteristic Curie temperature range. Subsequently, a series of other compositions were prepared in the wider Na0.5K0.5NbO3 - LiTaO3-BiScO3 ternary system. Considering the combined data from XRD, dielectric measurements, SEM, TEM and piezoelectric properties for a wide range of compositions within the NKN-rich region of the NKN-LT-BS system, materials may be grouped into three categories, exhibiting the following defining characteristics. Type I: single, sharp dielectric Curie peak (~ 370°C); single phase by XRD; large grain size (5-10μm); chemically uniform by TEM-EDX. Type II: broad, single dielectric peak (~ 350°C); single phase by XRD; large grain size; no obvious chemical segregation. Type Ila: twin, broad dielectric peak(s) (~ 370°C and ~ 470°C); broad XRD peaks; small grain size (~ O.5μm); chemical segregation (core-shell structure) identified by TEM-EDX. Reasons for the properties of these three classes of material are discussed; comparisons are drawn with other lead-free dielectrics and piezoelectrics; finally, the potential of the materials in future device applications are considered.
Style APA, Harvard, Vancouver, ISO itp.
8

De, Poumeyrol Benjamin. "Characterization of piezoelectric paint". Thesis, University of Newcastle Upon Tyne, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273485.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
9

Hack, Thorsten. "Stick-slip piezoelectric actuators". Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624403.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
10

Lai, Ming-Liang. "Developing piezoelectric biosensing methods". Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6109/.

Pełny tekst źródła
Streszczenie:
Biosensors are often used to detect biochemical species either in the body or from collected samples with high sensitivity and specificity. Those based on piezoelectric sensing methods employ mechanically induced changes to generate an electrical response. Reliable collection and processing of these signals is an important aspect in the design of these systems. To generate the electrical response, specific recognition layers are arranged on piezoelectric substrates in such a way that they interact with target species and so change the properties of the device surface (e.g. the mass or mechanical strain). These changes generate a change in the electrical signal output allowing the device to be used as a biosensor. The characteristics of piezoelectric biosensors are that they are competitively priced, inherently rugged, very sensitive, and intrinsically reliable. In this study, a compound label-free biosensor was developed. This sensor consists of two elements: a Love wave sensor and an electrochemical impedance sensor. The novelty of this device is that it can work in both dry and wet measurement conditions. Whilst the Love wave sensor aspect of the device is sensitive to the mass of adsorbed analytes under both dry and wet conditions with high sensitivity, the sensitivity coefficients in these two conditions may be different due to the different (mechanical) strengths of interaction between the adsorbed analyte and the substrate. The impedance sensor element of the device however is less sensitive to the mechanical strength of the bond between the analyte and the sensing surface and so can be used for in-situ calibration of the number of molecules bound to the sensing surface (with either a strong or weak link): conventional Love wave sensors are not sensitive to material loosely bound to the surface. Thus, a combination of results from these two sensors can provide more information about the analyte and the accuracy of the Love wave sensor measurements in a liquid environment. The device functions with label-free molecules and so special reagents are not needed when carrying out measurements. In addition, the fabrication of the device is not too complicated and it is easy to miniaturise. This may make the system suitable for point-of-care diagnostics and bio-material detection. The substrate used in these sensors is 64°Y–X lithium niobate (LiNbO3) which is a kind of piezoelectric material. On the substrate, there is a pair of interdigital transducers (IDTs) which are composed of 100 Ti/Au split-finger pairs with a periodicity (λ) of 40μm. The acoustic path length, between both IDTs, is 200λ and the aperture between the IDTs is 100λ. On top of the substrate and IDTs, there is a PMMA guiding layer with an optimised thickness ranging from 1000 nm to 1300 nm. In addition, a gold layer with thickness 100 nm is deposited on the guiding layer to act as the electrodes for the electrochemical impedance sensor. The biosensor in this study has been used to measure Protein A, IgG, and GABA molecules. Protein A is often coupled to other molecules such as a fluorescent dye, enzymes, biotin, and colloidal gold or radioactive iodine without affecting the antibody binding site. In addition, the capacity of Protein A to bind antibodies with such high affinity is the driving motivation for its industrial scale use in biologic pharmaceuticals. Therefore, measuring Protein A binding is a useful method with which to verify the function of the biosensor. IgG is the most abundant antibody isotype found in the circulation. By binding many kinds of pathogens including viruses, bacteria, and fungi, IgG protects the body from infection. Also, IgG can bind with Protein A well so the biosensor here could also measure IgG after a Protein A layer is immobilised on the sensing area. GABA is the main inhibitory neurotransmitter in the mammalian central nervous system. It plays an important role in regulating neuronal excitability throughout the nervous system. The conventional method to measure concentrations of GABA under the extracellular conditions is by using liquid chromatography. However, the disadvantages of chromatographic methods are baseline drift and additions of solvent and internal standards. Therefore, it is necessary to develop a simple, rapid and reliable method for direct measurement of GABA, and the sensor here is an attractive choice. When the Love wave sensor works in the liquid media, it can only be used to measure the mass of analytes but does not provide information about the conditions of molecules bound with the sensing surface. In contrast, electrochemical impedance sensing based on the diffusion of redox species to the underlying metal electrode can provide real-time monitoring of the surface coverage of bound macromolecular analytes regardless of the mechanical strength of the analyte-substrate bond: the electrochemical impedance measurement is sensitive to the size and extent of the diffusion pathways around the adsorbed macromolecules used by the redox species probe i.e. it is sensitive to the physical area of the surface covered by the macromolecular analyte and not to the mass of material that is sensed through a mechanical coupling effect (as in a Love wave device). Although electrochemical impedance measurements under the dry state are quite common when studying batteries and their redox/discharge properties, these are quite different sorts of systems to the device in this study. Therefore, integrating these two sensors (Love wave sensor and electrochemical impedance sensor) in a single device is a novel concept and should lead to better analytical performance than when each is used on their own. The new type of biosensor developed here therefore has the potential to measure analytes with greater accuracy, higher sensitivity and a lower limit of detection than found when using either a single Love wave sensor or electrochemical impedance sensor alone.
Style APA, Harvard, Vancouver, ISO itp.
Więcej źródeł

Książki na temat "Piezoelectric"

1

Tzou, Hornsen. Piezoelectric Shells. Dordrecht: Springer Netherlands, 2019. http://dx.doi.org/10.1007/978-94-024-1258-1.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
2

Bhalla, Suresh, Sumedha Moharana, Visalakshi Talakokula i Naveet Kaur. Piezoelectric Materials. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781119265139.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
3

Tzou, H. S. Piezoelectric Shells. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1783-8.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
4

Janshoff, Andreas, i Claudia Steinem, red. Piezoelectric Sensors. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-36568-6.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
5

Gautschi, Gustav. Piezoelectric Sensorics. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04732-3.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
6

Segel, Joshua E. Piezoelectric actuators. Hauppauge, N.Y: Nova Science Publishers, 2011.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Gómez, Ernesto Suaste. Piezoelectric ceramics. Rijeka, Croatia: Sciyo, 2010.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
8

Claudia, Steinem, i Janshoff Andreas, red. Piezoelectric sensors. Berlin: Springer, 2006.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
9

Bhugra, Harmeet, i Gianluca Piazza, red. Piezoelectric MEMS Resonators. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-28688-4.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
10

Erhart, Jiří, Petr Půlpán i Martin Pustka. Piezoelectric Ceramic Resonators. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-42481-1.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
Więcej źródeł

Części książek na temat "Piezoelectric"

1

Gautschi, Gustav. "Piezoelectric Sensors". W Piezoelectric Sensorics, 73–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04732-3_5.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
2

Tzou, H. S. "Introduction". W Piezoelectric Shells, 1–12. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1783-8_1.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
3

Tzou, H. S. "Finite Element Formulation and Analyses". W Piezoelectric Shells, 405–56. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1783-8_10.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
4

Tzou, H. S. "Piezoelectric Shell Vibration Theory". W Piezoelectric Shells, 13–62. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1783-8_2.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
5

Tzou, H. S. "Common Piezoelectric Continua and Active Piezoelectric Structures". W Piezoelectric Shells, 63–114. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1783-8_3.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
6

Tzou, H. S. "Distributed Sensing and Control of Elastic Shells". W Piezoelectric Shells, 115–54. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1783-8_4.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Tzou, H. S. "Multi-Layered Shell Actuators". W Piezoelectric Shells, 155–86. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1783-8_5.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
8

Tzou, H. S. "Boundary Control of Beams". W Piezoelectric Shells, 187–226. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1783-8_6.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
9

Tzou, H. S. "Distributed Control of Plates with Segmented Sensors and Actuators". W Piezoelectric Shells, 227–82. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1783-8_7.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
10

Tzou, H. S. "Convolving Shell Sensors and Actuators Applied to Rings". W Piezoelectric Shells, 283–336. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1783-8_8.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.

Streszczenia konferencji na temat "Piezoelectric"

1

Cross, Charles J., i Sanford Fleeter. "Shunted Piezoelectric Control of Airfoil Vibrations". W ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-385.

Pełny tekst źródła
Streszczenie:
The application of shunted piezoelectric elements to provide passive structural damping is investigated by means of experiments performed in the Purdue High Speed Axial Compressor Research Facility. Piezoelectric elements are bonded to three airfoils in the stator row. This airfoil is excited by the wakes generated by an upstream rotor. As the wakes drive the airfoil vibrations, the piezoelectrics experience a strain and in response produce an electric field. Tuned electrical circuits connected to the piezoelectrics as shunts dissipate this electrical energy, with multiple shunting techniques utilized. This electrical energy dissipation and the corresponding reduction in the airfoil mechanical energy result in a reduction in the magnitude of the resonant vibrations. Thus, these passive vibration control experiments demonstrate that shunted piezoelectrics have significant damping capability and could be practical for the elimination or minimization of gas turbine blading flow induced vibrations.
Style APA, Harvard, Vancouver, ISO itp.
2

Collinger, J. C., W. C. Messner i J. A. Wickert. "Vibration Control With Magnetically Mounted Piezoelectric Actuators". W ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67369.

Pełny tekst źródła
Streszczenie:
A novel vibration control method utilizing magnetically mounted piezoelectric actuators is described. Piezoelectric actuators are bonded to permanent magnets, which are attached to the surface of a steel cantilever beam through their magnetic attraction. The magnetic-piezoelectric control mounts are an alternative to traditional epoxy attachment methods for piezoelectrics which allows easy in-the-field reconfiguration. In model and laboratory measurements, the beam is driven through base excitation and the resonant shunt and synchronized switching techniques are applied to two magnetic-piezoelectric control mounts to attenuate vibration. The coupled system is discretized using a Galerkin finite element model that incorporates relative axial motion between the beam and the mounts, which is governed by the sticking contact stiffness per unit length of the beam-magnet interface. The control mounts are designed using a magnetic array configuration which increases the attraction force for a given magnet thickness. Results show that the magnetic-piezoelectric control mounts provide attenuation, while also providing the flexibility to easily adjust the actuators along the length of the beam.
Style APA, Harvard, Vancouver, ISO itp.
3

Yang, Lin, Qing-jun Ding i Chun-sheng Zhao. "Piezoelectric drill based on converse piezoelectric effect". W 2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA). IEEE, 2008. http://dx.doi.org/10.1109/spawda.2008.4775766.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
4

Bahrami, Hassan, i H. S. Tzou. "Design and Analysis of a Precision Multi-DOF Placement Device". W ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0172.

Pełny tekst źródła
Streszczenie:
Abstract Piezoelectrics are increasingly being used in a large number of research explorations and engineering applications. In industry, piezoelectrics are widely being accepted as sensors, giving engineers more leverage to add new features to their products. In recent years, for example, distributed piezoelectric sensors and actuators are widely used in active vibration control of structures or precision mechatronic and structronic systems. In this paper, a piezoelectric quad-morph based multiple degrees of freedom (DOF) end-effector is designed and its multi-DOF precision placement operation is analyzed. This new multi-DOF cantilever beam design consists of multiple piezoelectric rectangular rods glued together, which provides a way to accurately position the end in space. Detailed analysis of this advanced composite structure is carried out by the finite element method incorporating the piezoelectric actuations.
Style APA, Harvard, Vancouver, ISO itp.
5

Judy, D. C., J. S. Pulskamp, R. G. Polcawich i L. Currano. "Piezoelectric Nanoswitch". W 2009 IEEE 22nd International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, 2009. http://dx.doi.org/10.1109/memsys.2009.4805451.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
6

Hohner, M., i S. Manhart. "Piezoelectric Scanners". W Hague International Symposium, redaktorzy Hanspeter Lutz i Georges Otrio. SPIE, 1987. http://dx.doi.org/10.1117/12.941544.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Bhuvanesh, M., S. Gokul, M. Manirathinam, M. V. Molykutty i G. Puthilibai. "Piezoelectric Pavement". W 2020 International Conference on Power, Energy, Control and Transmission Systems (ICPECTS). IEEE, 2020. http://dx.doi.org/10.1109/icpects49113.2020.9337013.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
8

Husak, M., P. Martinek, V. Janicek, J. Novak, A. Boura i J. Foit. "Piezoelectric Microgenerator". W 2020 13th International Conference on Advanced Semiconductor Devices And Microsystems (ASDAM). IEEE, 2020. http://dx.doi.org/10.1109/asdam50306.2020.9393859.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
9

Kang, Byung-Woo, Jaehwan Kim, ChaeCheon Cheong i Bo-Won Yang. "Precision piezoelectric stepping motor using piezoelectric torsional actuator". W Smart Materials and MEMS, redaktorzy Dinesh K. Sood, Ronald A. Lawes i Vasundara V. Varadan. SPIE, 2001. http://dx.doi.org/10.1117/12.420876.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
10

Zargarani, Anahita, i Nima Mahmoodi. "Investigating Piezoelectric Energy Harvesting Circuits for Piezoelectric Flags". W ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/smasis2015-9011.

Pełny tekst źródła
Streszczenie:
This paper provides a comparison between two different energy harvesting circuits for a piezoelectric flag subjected to uniform flow. Between two circuits tested, one is Simple Resistive Load, and the other one is the standard AC-DC circuit. To experimentally investigate these circuits, the piezoelectric flag output voltage has been studied under various wind speeds in a wind tunnel. The simple resistive load circuit provides an alternating voltage, and not a DC voltage. The standard AC-DC circuit is used to convert the AC voltage into a DC voltage; however, the power dropped as a result of the voltage drop across the forward-biased diodes.
Style APA, Harvard, Vancouver, ISO itp.

Raporty organizacyjne na temat "Piezoelectric"

1

Oates, William S., i Farrukh Alvi. Piezoelectric Pulsed Microjets. Fort Belvoir, VA: Defense Technical Information Center, kwiecień 2011. http://dx.doi.org/10.21236/ada546107.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
2

Douglas, James Kenneth, i Matt Eichenfield. Piezoelectric Nano-Optomechanical Systems. Office of Scientific and Technical Information (OSTI), styczeń 2017. http://dx.doi.org/10.2172/1505466.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
3

Reke, Michael, Sebastian Grobosch i Kai Niegetiet. The Piezoelectric Controlled Carburetor. Warrendale, PA: SAE International, listopad 2011. http://dx.doi.org/10.4271/2011-32-0528.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
4

Creighton, Steven, Peter W. Chung i John D. Clayton. Multiscale Modeling of Piezoelectric Materials. Fort Belvoir, VA: Defense Technical Information Center, listopad 2008. http://dx.doi.org/10.21236/ada494112.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
5

Chow, Weng Wah, i Sebastian Maciej Wieczorek. Piezoelectric field in strained GaAs. Office of Scientific and Technical Information (OSTI), listopad 2005. http://dx.doi.org/10.2172/923072.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
6

Bailey, Thomas, Alexander Gruzen i Paul Madden. RCS/Piezoelectric Distributed Actuator Study. Fort Belvoir, VA: Defense Technical Information Center, sierpień 1988. http://dx.doi.org/10.21236/ada201276.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Gazonas, George A., Raymond A. Wildman i David A. Hopkins. Elastodynamic Impact into Piezoelectric Media. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 2014. http://dx.doi.org/10.21236/ada608898.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
8

Shrout, Thomas R. Resource for Piezoelectric Single Crystals. Fort Belvoir, VA: Defense Technical Information Center, kwiecień 1999. http://dx.doi.org/10.21236/ada363144.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
9

Johnson, Trevor Todd. Piezoelectric Load Cell Literature Review. Office of Scientific and Technical Information (OSTI), maj 2019. http://dx.doi.org/10.2172/1514903.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
10

Suleiman, Ahmad, Marie Pender i George Guilbault. Passive Piezoelectric Hydrogen Chloride Monitor. Fort Belvoir, VA: Defense Technical Information Center, styczeń 1990. http://dx.doi.org/10.21236/ada585060.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
Możesz być także zainteresowany rozszerzonymi bibliografiami na temat „Piezoelectric” dla poszczególnych typów źródeł:
Artykuły w czasopismach Rozprawy doktorskie Książki
Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!

Do bibliografii